Project Database

Denim Fabric Cotton Recovery by Mechanical Warp-Weft Separation

Demand for cotton has risen 3.1% between 2015 to 2019. Production of virgin cotton requires large agricultural and water resources, together with extensive consumption of fertilizer and pest control chemicals. A way to reduce demand and consumption is to recycle, and create close loops where post-consumer textile products are disintegrated and then reprocessed back into yarn and recycled into product subsequently.

Of the different types of textile product, denim recycling has been in demand by the industry. The overall market size for denim valued at 90 billion US dollars in 2019, the potential is huge. The problem faced by existing denim recycling effort is the blending composition of synthetic yarn in the weft yarn, this cause degradation of recycled yarn quality, and lower recycling efficiency due to presence of materials such as spandex.

The present project aims to develop a novel mechanical method to conduct separation of denim fabric without use of water or chemicals and recover the warp (cotton) and weft (cotton blended with synthetic) weaving components in the denim structure. Since the amount of warp yarn in Jeans is the majority, it would be effective to separate warp yarn from the weft yarn for the recovery of cotton.

Project No. (ITC) ITP/031/20TP
Project Type Platform
Project Co-ordinator Mr Leung Kin-Ming John
Research Institute The Hong Kong Research Institute of Textiles & Apparel Limited
ITF Amount HK$ 4,319,209
Start Date DD/MM/YY 2020-12-01
Completion Date DD/MM/YY 2022-05-31
Sponsors
H&M Hennes & Mauritz (Far East) Ltd.
Soorty Enterprises Pvt Ltd